For animal lovers, Atlanta has quite a few places that I enjoy.
Georgia Aquarium | Atlanta Attractions | Things To Do Atlanta - The Georgia Aquarium is a nice facility and always trying to improve the experience.
Welcome to Zoo Atlanta - Zoo Atlanta is a really nice zoo and one of the only ones in the country that operate "in the black". A great reptile house with all the exotic snakes as well as a Komodo Dragon. Outstanding Primate areas of gorillas, tangs, and chimps among others. Of course the Pandas are a big draw. They have about everything except bears.
Chattahoochee Nature Center ? CNC Home - one of my favorite places. A great center with birds of prey including Bald Eagle, hiking, fishing, kids camp, about every outdoor activity you can imagine.